import { ref, toValue } from "vue";
import type { ComputedRef, Ref } from "vue";
import type { FormInst } from "naive-ui";
import { REG_CODE_SIX, REG_EMAIL, REG_PHONE, REG_PWD, REG_USER_NAME } from "@/constants/reg";
import { $t } from "@/locales";

export function useFormRules() {
  const patternRules = {
    userName: {
      pattern: REG_USER_NAME,
      message: $t("form.userName.invalid"),
      trigger: "change"
    },
    phone: {
      pattern: REG_PHONE,
      message: $t("form.phone.invalid"),
      trigger: "change"
    },
    pwd: {
      pattern: REG_PWD,
      message: $t("form.pwd.invalid"),
      trigger: "change"
    },
    code: {
      pattern: REG_CODE_SIX,
      message: $t("form.code.invalid"),
      trigger: "change"
    },
    email: {
      pattern: REG_EMAIL,
      message: $t("form.email.invalid"),
      trigger: "change"
    }
  } satisfies Record<string, App.Global.FormRule>;

  const formRules = {
    userName: [createRequiredRule($t("form.userName.required")), patternRules.userName],
    phone: [createRequiredRule($t("form.phone.required")), patternRules.phone],
    pwd: [createRequiredRule($t("form.pwd.required")), patternRules.pwd],
    code: [createRequiredRule($t("form.code.required")), patternRules.code],
    email: [createRequiredRule($t("form.email.required")), patternRules.email]
  } satisfies Record<string, App.Global.FormRule[]>;

  /** the default required rule */
  const defaultRequiredRule = createRequiredRule($t("form.required"));

  function createRequiredRule(message: string): App.Global.FormRule {
    return {
      required: true,
      message
    };
  }

  /** create a rule for confirming the password */
  function createConfirmPwdRule(pwd: string | Ref<string> | ComputedRef<string>) {
    const confirmPwdRule: App.Global.FormRule[] = [
      { required: true, message: $t("form.confirmPwd.required") },
      {
        asyncValidator: (rule, value) => {
          if (value.trim() !== "" && value !== toValue(pwd)) {
            return Promise.reject(rule.message);
          }
          return Promise.resolve();
        },
        message: $t("form.confirmPwd.invalid"),
        trigger: "input"
      }
    ];
    return confirmPwdRule;
  }

  return {
    patternRules,
    formRules,
    defaultRequiredRule,
    createRequiredRule,
    createConfirmPwdRule
  };
}

export function useNaiveForm() {
  const formRef = ref<FormInst | null>(null);

  async function validate() {
    await formRef.value?.validate();
  }

  async function restoreValidation() {
    formRef.value?.restoreValidation();
  }

  return {
    formRef,
    validate,
    restoreValidation
  };
}
